1220031553055 has 16 divisors (see below), whose sum is σ = 1698159060480. Its totient is φ = 824106599712.

The previous prime is 1220031553049. The next prime is 1220031553067. The reversal of 1220031553055 is 5503551300221.

It is a cyclic number.

It is not a de Polignac number, because 1220031553055 - 2¹⁴ = 1220031536671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260132315 + ... + 260137004.

It is an arithmetic number, because the mean of its divisors is an integer number (106134941280).

Almost surely, 2^{1220031553055} is an apocalyptic number.

1220031553055 is a deficient number, since it is larger than the sum of its proper divisors (478127507425).

1220031553055 is an equidigital number, since it uses as much as digits as its factorization.

1220031553055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520269398.

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 1220031553055 its reverse (5503551300221), we get a palindrome (6723582853276).

The spelling of 1220031553055 in words is "one trillion, two hundred twenty billion, thirty-one million, five hundred fifty-three thousand, fifty-five".